Fireproof building construction.



No. 727,250. PATENTED MAY 5, 1903 E. P. s, WRIGHT & Ar-MoGARTNEY. FIREPROOF BUILDING CONSTRUCTION.

APPLICATION FILED JAN. 17, 1903.

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UNITED STATES Patented May 5,

ELISi-IA P. S. VVRTGHT, OF SI-IQRTI-II LL S, NE\ V JERSEY, AND ALBERT MOCARTNEY, OF NEXV YORK, N. Y.

FIREPROOF BUILDING CONSTRUCTION.

SPECIFICATION forming part (if Letters Patent No. 727,250, dated May 5, 1903. Application filed January 1' 7, 1903. Serial No. 139 ,3O. (No model.)

New York, county and State ofNew York,

citizens of the United States, have invented certain new and usefullmproyements in FireproofBuilding Construction, of which the following is a specification, reference being had to the drawings accompanying and forming a part of the same.

Our invention relates to that method of fireproof construction in which concrete, cement, or similar plastic material is used in connection with iron or steel framework, and has for its object not only to efiect a considerable saving in material and the cost of manufacturing the same, but also to provide a system of construction which shall be more durable,

and efficient in use and which can be carried out with less labor and expense than have heretofore been required to produce an equally eflicient'result.

To these ends it consists of the novel fea tures and combinations hereinafter described,

and more particularly pointed out in the claims.

As well known, concrete, while possessing great resistance to crushing strains, has but little tensile strength, so that a comparatively slight stress on an unsupported area of a block or slab will cause fracture of the same. It is therefore necessary to provide some means whichwill supply the desired resistance to fractureas, for example, by embedding iron or steel bars in the concrete. In one method which we have used with success T- bars were employed, the bars being preferably made by bending sheet metal. Such bars, however, are costly both to manufacture and to use. We have therefore devised our present invention,.of whichv an embodiment now be clear. which furnish/to the casting thei'tensile I supports-2 2; The latter are preferably provided with notches 3 3, in which rest clips of a saddle form. (Shown inrdetail in Fig. The clips or saddles 4 are easily and cheaply made from suitable strips or bars by bending. The outstanding flanges 5 are bent at right angles tothe sides and also twisted, so that intheir broadest dimension they liein'a substantially vertical plane, as shown. They are either hung on the supports loosely or may be fastened in any convenient way, as byriveting. At each end of the supports 2 it is desirable to use a clip of substantially the form just described, except that the flanges thereof are not twisted. By this means the flanges of the clip rest firmly on the flange of the beams 1," and thus hold the supports against tilting. The metallic parts of the structure being thusassembled,a suitable centeringas, for example, 6is arranged below the former and amass ,of concrete or other plastic material cast in position, as shown, embedding in its mass thesupports and clips. The functions of the supports and clips will They constituteinternal ribs strength and resistance to fracture which was before wanting, and at the same time the clips support the casting after the centering 6 has been removed.

The construction ,may be made in panel form, as shown in Fig.2, by employing blocks 7, preferably of concrete or other plastic material, on which'the supports 2 are placed instead of directly on the flanges of the I-beams. The centering-Bis thenarranged substantially flush with the upper surfaces of the blocks and the cement cast thereon. It will thus be seen that when the centering is removed the'under side of the structure will ."show' a panel form particularly suitable for ceilings.

Where a 'specially strong construction is required, the desired increase of tensile strength maybe secured by doubling the clips in the manner shown in Figs..2;and.2-,4; In that case the second set of clips are arranged upon the first, preferably with the flanges of the latter extending in a horizontal plane, as shown, for the purpose of afiording a support for the casting without possibility of the flanges shearing through under heavy loads, as might be the case if both sets of flanges were vertical. In the construction just described We prefer to rivet both clips to the support, as shown at 8. It will of course be understood that the use of doubled clips is not confined to the panel structure of Fig. 2.

By using the arrangement shown in Fig. 5 a strong construction may be obtained without employing a wide support, such as is illustrated in the other figures. As will be seen, a narrow support- 2 is held a distance above the lower flange of the beam, while the clips extend below the support. This economical method we consider within the scope of our invention.

Practical use of the invention just described has demonstrated its cheapness and efficiency. At the same time we have found that it is capable of numerous modifications; but these are clearly within the scope of our invention, and we therefore do not consider ourselves limited to the precise embodiment shown.

What we claim is 1. In fireproof building construction, the combination with a plurality of flanged beams, of a plurality of supports extending between said beams, flanged saddle-clips having outstanding flanges twisted to lie in a substantially vertical plane, and a mass of plastic material cast between said beams, embedding in the mass the supports and flanged clips, as set forth.

2. Infireproof building construction, the combination with a plurality of flanged beams, of a plurality of supports extending between said beams and resting on the flanges thereof, flanged saddle-clips resting in notches on said supports having outstanding flanges twisted to lie in a substantially vertical plane, and a mass of plastic material cast between said beams, embedding in the mass the supports and flanged clips, asset forth.

3. In fireproof building construction, the combination with a plurality of flanged beams, of blocks resting on the flanges of said beams, supports extending between said beams and carried by said blocks, flanged saddle-clips on said supports having outstanding flanges twisted to lie in a substantially vertical plane, and a mass of plastic material cast between said beams upon a centering arranged substantially flush with the upper surfaces of the blocks, said mass embedding the supports and flanged clips therein, as set forth.

4. In fireproof building construction, the combination with a plurality of flanged beams, of a plurality of supports extending between said beams, flanged saddle-clips on said supports, having their flanges extending outward in a horizontal plane, flanged saddleclips arranged upon the first-mentioned clips, having their flanges twisted and extending outward in a vertical plane, and a body of plastic material cast between said beams, embedding in its mass the supports and flanged clips, as set forth.

ELISl-IA P. S. WRIGHT. ALBERT MOOARTNEY.

Witnesses:

JAMES H. CRoTTY, J. W. LUKENBaoH. 

